avoid day jour night nuit Paris parking sign signpost caution cone danger repairs roadside warning withches' hat work copy copyspace disaster distress face fear hand hands hide man men people sad sadness space advice alert appropriate behavior appropriate behaviour black bright care concern dangerous denied directions not allowed not permitted permission denied prohibited prohibition protect protection rules safety signs warning sign yellow appropriate-behavior appropriate-behaviour limitations limited limited-entry not-allowed not-permitted permission-denied red restricted restrictions vehicles white access-denied communicating communication exceptions regulations responsible warning-sign be-careful below-ground cable careful digging digging-dangers optical-fibre-cable potential risk risks risky stay-clear warned advising ban banned behave communicate directive information informing no-golf restriction signage flammable gas gaseous natural-gas no-ignition outlet vapour vapours polluted pollution toxic toxicity water pollution water toxicity weathered worn authorisation authorised authorization